Final answer:
The Integration feature in Big SQL allows users to join a Hadoop data set to data in external databases.
Step-by-step explanation:
The Integration feature in Big SQL allows users to join a Hadoop data set to data in external databases. This feature enables Big SQL to seamlessly integrate with other data sources, making it possible to combine and analyze data from different sources. For example, users can join a Hadoop data set with a table in a relational database and perform complex analysis on the combined data.